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WO2018205395A1 - Procédé d'attaque de pixel de panneau d'affichage et dispositif d'affichage - Google Patents

Procédé d'attaque de pixel de panneau d'affichage et dispositif d'affichage Download PDF

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Publication number
WO2018205395A1
WO2018205395A1 PCT/CN2017/091641 CN2017091641W WO2018205395A1 WO 2018205395 A1 WO2018205395 A1 WO 2018205395A1 CN 2017091641 W CN2017091641 W CN 2017091641W WO 2018205395 A1 WO2018205395 A1 WO 2018205395A1
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Prior art keywords
pixel
blue sub
blue
pixels
voltage signal
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Chinese (zh)
Inventor
陈猷仁
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HKC Co Ltd
Chongqing HKC Optoelectronics Technology Co Ltd
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HKC Co Ltd
Chongqing HKC Optoelectronics Technology Co Ltd
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Priority to US15/855,363 priority Critical patent/US10460682B2/en
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3607—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels

Definitions

  • the present application relates to the field of display technologies, and in particular, to a display panel pixel driving method and a display device.
  • VA Very Alignment
  • IPS In-Plane Switching liquid crystal technology
  • VA type liquid crystal technology has higher production efficiency than IPS liquid crystal technology.
  • Low manufacturing cost has advantages, but optical properties are more obvious than optical IPS liquid crystal technology.
  • large-size panels require a large viewing angle for commercial applications, and VA-type liquid crystal drivers are often unable to be used in visual roles. Meet the needs of market applications.
  • the VA type liquid crystal technology observes the change of the gray scale brightness ratio of the red sub-pixel R, the green sub-pixel G, and the blue sub-pixel B from the positive viewing angle and the side viewing angle, and it can be found that the brightness of the blue sub-pixel B in the side viewing angle increases with the voltage, and the brightness is saturated.
  • the red sub-pixel R and the green sub-pixel G are significantly and fast, so that the mixed color viewing angle will have a significant defect of blue bias.
  • a display panel pixel driving method and a display device that solve a visual character bias are provided.
  • a display panel pixel driving method includes:
  • the original driving data of each blue sub-pixel in the grayscale value lookup table corresponds to a set of target grayscale value pairs, and each set of target grayscale value pairs includes unequal first voltage signals and second voltage signals, and
  • the positive viewing angle blending brightness of the blue sub-pixel alternately driving the first voltage signal and the second voltage signal is equivalent to the positive viewing angle brightness of the original driving data driving the blue sub-pixel;
  • the blue sub-pixel of each pixel group is divided into a plurality of sets of blue pixel pairs, each set of blue pixel pairs including adjacent first blue sub-pixels and second blue sub-pixels, adjacent blue pixel pairs a first blue sub-pixel of one set of blue pixel pairs and a second blue sub-pixel of another set of blue pixel pairs are disposed adjacent to each other;
  • the second blue sub-pixel second voltage signal and the second voltage signals of the plurality of adjacent blue sub-pixels acquire the second luminance signal according to different weights, and drive the second blue sub-pixel according to the second luminance signal.
  • a display device includes: a display panel, the pixel unit on the display panel is divided into a plurality of pixel groups; the blue sub-pixel of each pixel group is divided into a plurality of sets of blue pixel pairs, each set of blue pixel pairs includes a phase a first blue sub-pixel and a second blue sub-pixel adjacent to each other, a first blue sub-pixel of one of the adjacent blue pixel pairs, and a second of the other set of blue pixel pairs
  • the blue sub-pixels are disposed adjacent to each other;
  • the control component includes: an acquisition unit configured to acquire original driving data of each pixel group; and a calculating unit configured to obtain a display hue of each pixel group according to the original driving data Obtaining a grayscale value lookup table according to the hue range to which the display hue belongs; the original driving data of each blue subpixel in the grayscale value lookup table corresponds to a set of target grayscale value pairs, and each set of target grayscales
  • the value pair includes unequal first voltage signals and second voltage signals
  • a display panel pixel driving method includes:
  • the original driving data of each blue sub-pixel in the grayscale value lookup table corresponds to a set of target grayscale value pairs, and each set of target grayscale value pairs includes unequal first voltage signals and second voltage signals, so that The positive viewing angle blending brightness of the blue sub-pixel alternately driving the first voltage signal and the second voltage signal is equivalent to the positive viewing angle brightness of the original driving data driving the blue sub-pixel;
  • each set of blue pixel pairs including adjacent first blue sub-pixels and second blue sub-pixels, adjacent blue pixel pairs a first blue sub-pixel of one set of blue pixel pairs and a second blue sub-pixel of another set of blue pixel pairs are disposed adjacent to each other;
  • a plurality of blue sub-pixels in a display area are alternately driven by unequal first luminance signals and second luminance signals, and a high-low-low luminance interval is used.
  • the signal replaces the image sub-pixel signal at the original position, and the low luminance signal can function to improve the visual character bias.
  • the pixel is no longer designed as the main pixel and the sub-pixel, which greatly improves the transmittance of the display panel and reduces the backlight cost.
  • pixels are no longer the main pixel and sub-pixel design, and the possibility of penetration and resolution is more significant.
  • FIG. 1 is a graph showing an increase in the voltage of a sub-pixel 0 degree angle and a 60 degree angle voltage as a function of brightness;
  • FIG. 2 is a schematic diagram of a main pixel and a sub-pixel in an embodiment
  • FIG. 3 is a front view and a large angle corresponding graph of a pixel in an embodiment
  • FIG. 4 is a front view and a large angle corresponding graph of a main pixel and a sub-pixel in an embodiment
  • FIG. 5 is a schematic view showing movement of liquid crystal molecules in an embodiment
  • FIG. 6 is a flow chart of a pixel driving method in another embodiment
  • FIG. 7 is a graph showing a voltage increase of a blue sub-pixel as a function of brightness in another embodiment
  • FIG. 8 is a graph showing voltage increase of a low voltage segment blue sub-pixel as a function of brightness in another embodiment
  • FIG. 9 is a graph showing voltage increase of a high voltage segment blue sub-pixel as a function of brightness in another embodiment
  • FIG. 10 is a schematic view of a display panel in another embodiment
  • FIG. 11 is a schematic diagram of a pixel group in another embodiment
  • FIG. 12 is a schematic diagram of a CIE LCH color space system in another embodiment
  • FIG. 13 is a flowchart of acquiring a combination of a first luminance signal and a second luminance signal by a plurality of blue sub-pixels of a pixel group in another embodiment
  • Figure 14 is a block diagram of a display device in an embodiment.
  • the VA type liquid crystal technology observes the gray scale brightness ratio changes of the red sub-pixel R, the green sub-pixel G, and the blue sub-pixel B from the positive viewing angle and the side viewing angle, wherein the ordinate is brightness, the horizontal and vertical coordinates are voltage, and It is found that the brightness of the blue sub-pixel B in the side view increases with the voltage, and the trend of brightness saturation is significantly faster than that of the red sub-pixel R and the green sub-pixel G, so that the mixed-color viewing angle will have a significant defect of blue bias.
  • each sub-pixel of RGB is divided into a main pixel and a sub-pixel, and in FIG. 2, blue sub-pixel B and green sub-pixel are sequentially from left to right.
  • G and the red sub-pixel R are exemplified by the green sub-pixel G, which is divided into a main pixel A and a sub-pixel B.
  • the driving voltages of the main pixel and the sub-pixel are differently given in space.
  • FIG. 3 is a graph in which the sub-pixel is not divided into a main pixel and a sub-pixel, and FIG.
  • FIG. 4 is a graph in which the sub-pixel is divided into a main pixel and a sub-pixel, and it can be seen that the sub-pixel The pixel is divided into the main pixel and the sub-pixel to effectively solve the defect of the visual role.
  • 5 is a schematic diagram showing movements of pixel molecules in RGB sub-pixel liquid crystal molecules in low gray scale, medium gray scale, and high gray scale, respectively, wherein the movement of main pixel A and sub-pixel B of the green sub-pixel G liquid crystal molecules in the middle gray scale is as follows.
  • Figure 5 shows.
  • such a pixel design needs to redesign a metal trace or a TFT component to drive the sub-pixel, thereby causing sacrifice of the permeable open area, affecting the panel transmittance, and directly increasing the backlight cost.
  • FIG. 6 is a flow chart of a pixel driving method of a display panel in an embodiment.
  • the display panel pixel The driving method can improve the color shift (or chromatic aberration) defect caused by the refractive index mismatch of the liquid crystal large viewing angle. In particular, it is possible to effectively improve the defect that the blue sub-pixel of the large viewing angle is prematurely saturated to cause color shift.
  • the display panel may be a TN (Twisted Nematic), an OCB (Optically Compensated Birefringence), a VA (Vertical Alignment) type liquid crystal display panel, or a curved liquid crystal display panel, but is not limited thereto.
  • the display panel pixel driving method is used for blue sub-pixel driving of a display panel, and the method includes the following steps:
  • the display panel includes at least blue sub-pixels.
  • each of the pixel groups n includes a plurality of blue sub-pixels, wherein the blue sub-pixels in one pixel group n are arranged Bn_1, 1, Bn_1, 2, ... Bn_i, j.
  • the display panel is divided into a plurality of pixel groups, and the more the pixel components, the more the number of copies of the blue signal is divided when driving, and the blue image displayed is better.
  • the pixel group includes a plurality of blue sub-pixels.
  • the number of pixels included in each pixel group can be set as needed.
  • S120 Acquire original driving data of each pixel group, and obtain a display hue of each pixel group according to the original driving data.
  • the above functional relationship can be known according to the CIE specification.
  • the CIE LCH color space system is shown in Figure 12. In the CIE LCH color space system, 0 to 360 degrees are used to represent different hue colors. Where 0° is defined as red, 90° is yellow, 180° is green, and 270° is blue.
  • the display hue H of each pixel group can be calculated and obtained by the average driving voltage of the pixel group.
  • each pixel group includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel. Therefore, the average grayscale values R'n, G'n, B'n of the current color sub-pixels of each pixel group are first obtained.
  • Bn' Average(Bn_1, 1, Bn_1, 2, ...Bn_2, 1, Bn_2, 2 whil, Bn_i, j);
  • Rn' Average (Rn_1, 1, Rn_1, 2, ..., Rn_i, j);
  • Gn' Average (Gn_1, 1, Gn_1, 2, .... Gn_2, 1, Gn_2, 2..., Gn_i, j).
  • n denotes the sequence number of the divided pixel group
  • H f3 (R'n, G'n, B'n).
  • the color purity C of each pixel group is also determined according to the average gray scale value described above.
  • the range of color purity C is expressed in the range of 0 to 100, with 100 representing the most vivid color.
  • the value of the color purity C represents a voltage signal at the time of display driving of the liquid crystal display device.
  • S130 Acquire a grayscale value lookup table according to the hue range to which the display hue belongs.
  • the hue value is previously divided into a plurality of range regions before determining the hue range to which the display hue of each pixel group belongs. Each range area can be determined based on the degree of color shift that needs to be improved.
  • the hue value is divided into six regions: the first region, 0° ⁇ H ⁇ 45° and 315° ⁇ H ⁇ 360°; the second region, 45° ⁇ H ⁇ 135°; the third region , 135 ° ⁇ H ⁇ 205 °; fourth zone, 205 ° ⁇ H ⁇ 245 °; fifth zone, 245 ° ⁇ H ⁇ 295 °; and sixth zone, 295 ° ⁇ H ⁇ 315 °. Therefore, the range to which it belongs can be determined based on the display hue of each pixel group obtained. It can be understood that the division of the display hue value can be divided according to actual needs, and is not limited thereto.
  • the original driving data of each blue sub-pixel in the gray-scale value lookup table corresponds to a set of target gray-scale value pairs, and each set of target gray-scale value pairs includes unequal first voltage signals and second voltage signals,
  • the positive viewing angle blending brightness of the blue subpixel alternately driving the first voltage signal and the second voltage signal is equivalent to the positive viewing angle luminance of the original driving data driving the blue subpixel.
  • the grayscale value of each blue sub-pixel in the grayscale value lookup table corresponds to a set of target grayscale value pairs.
  • Each set of target grayscale value pairs includes unequal first voltage signals and second voltage signals, the first voltage signal and the second voltage signal need to be satisfied such that the first voltage signal and the second voltage signal alternately drive the blue sub-pixels
  • the positive viewing angle blending luminance is equivalent to the original driving data driving the positive viewing angle luminance of the blue sub-pixel.
  • the large viewing angle brightness corresponding to the first voltage signal and the second voltage signal is as close as possible to the positive viewing angle brightness of the original driving data.
  • the difference between the first voltage signal and the second voltage signal needs to be greater than a preset difference range, thereby ensuring a larger grayscale difference between the two grayscale values of the target grayscale value pair.
  • the large viewing angle can be defined to be greater than 60°, or customized according to the user.
  • the acquisition of the target grayscale value pairs can be performed by finding a grayscale value lookup table (LUT).
  • Different hue values have different effects on the visual character bias, so different hue ranges correspond to different gray-scale value lookup tables, so that corresponding gray-scale value pairs corresponding to different hue ranges can be obtained corresponding to different hue ranges, and the target
  • the gray scale value pair is driven by the driving voltage, that is, by a more suitable driving voltage, thereby ensuring that the brightness of the adjusted blue sub-pixel in the side view is closer to the curve under the front view as the gray scale changes.
  • the correspondence table between the hue range and the grayscale value lookup table may be stored in the storage component in advance, so that the corresponding driving voltage can be determined according to the grayscale signal acquired by the lookup table.
  • the grayscale value lookup table LUT1 when the hue range to which the hue belongs is the first region, the grayscale value lookup table LUT1 is used, and when the hue range to which the hue belongs is the second region, the grayscale value lookup table LUT2 is used, as shown in the following table:
  • the grayscale value lookup table needs to be acquired simultaneously according to the range in which the display hue and color purity belong.
  • different hue ranges have different color purity settings.
  • the range setting of the color purity corresponding to different zones can also be determined according to the degree of color shift which is actually required to be improved.
  • the first region of the hue range corresponds to the first color purity range C TL1 ⁇ C ⁇ C TH1 ;
  • the second region of the hue range corresponds to the second color purity range C TL2 ⁇ C ⁇ C TH2 ;
  • the third region of the hue range corresponds to the third color purity Range C TL3 ⁇ C ⁇ C TH3 ; and so on. Therefore, the range to which it belongs can be determined based on the obtained display hue and color purity. Taking the embodiment as an example, when both the display hue H and the color purity C satisfy the following two conditions, it can be determined that it belongs to the first range:
  • the corresponding grayscale value lookup table can be obtained according to the range in which the hue and the color purity are displayed.
  • the first voltage signal and the second voltage signal corresponding to the blue sub-pixel obtained according to the average signal Bn' and Rn', Gn' look-up table (LUT) are combined into Ln_i, j and Hn_i, j, that is, a low voltage signal and a high voltage signal. combination.
  • Ln_i, j and Hn_i, j that is, a low voltage signal and a high voltage signal. combination.
  • the combination of the first voltage signal and the second voltage signal causes the gamma curve of the blue sub-pixel to be closer to the target gamma curve.
  • S150 Dividing blue sub-pixels of each pixel group into a plurality of sets of blue pixel pairs, each set of blue pixel pairs including adjacent first blue sub-pixels and second blue sub-pixels, adjacent blue pixels The first blue sub-pixel of one of the pair of blue pixel pairs of the pair and the second blue sub-pixel of the other set of blue pixel pairs are disposed adjacent to each other.
  • the blue sub-pixels in each pixel group are divided into a plurality of sets of blue pixel pairs, each set of blue pixel pairs including adjacent first blue sub-pixels and second blue sub-pixels, wherein the first blue sub-pixels and The second blue sub-pixels may be laterally adjacent or vertically adjacent.
  • the first blue sub-pixels of the adjacent pairs of blue pixels are staggered, that is, the first blue sub-pixel of one set of blue pixel pairs is adjacent to the second blue sub-pixel of the other set of blue pixel pairs.
  • S160 Acquire a first brightness signal according to different first weights of the first blue sub-pixel first voltage signal and the first voltage signals of the plurality of adjacent blue sub-pixels, and drive the first blue sub-pixel according to the first brightness signal;
  • the second blue sub-pixel second voltage signal and the second voltage signals of the plurality of adjacent blue sub-pixels acquire the second luminance signal according to different weights, and drive the second blue sub-pixel according to the second luminance signal.
  • the first voltage signal is a low voltage signal
  • the second voltage signal is a high voltage signal
  • the first blue sub-pixel acquires its own low voltage signal and an adjacent low voltage signal, and then acquires a new low voltage signal according to different weights. That is, the first luminance signal, the second blue subpixel acquires a new high voltage signal, that is, the second luminance signal, and then drives the first blue subpixel and the second with the new low voltage signal and the new high voltage signal, respectively.
  • the blue sub-pixel replaces the image sub-pixel signal of the original position with a high-low-brightness interval signal, and the low-brightness signal can improve the role of the role.
  • a high brightness signal maintains display resolution.
  • the first voltage signal is a high voltage signal and the second voltage signal is a low voltage signal.
  • the full-frame blue display of the original image is spatially divided into a plurality of pixel groups, and the image sub-pixel signal of the original position is replaced by a high-low-brightness interval signal, and the lower luminance signal can improve the visual role deviation.
  • the role In the case of maintaining a high transmittance design, the human eye is less sensitive to the resolution of the blue using a pixel design that does not have a low color shift.
  • the blue sub-pixel is spatially given a high-low-brightness interval signal, so that the brightness change of the side view blue is controlled.
  • the chromatic aberration caused by the large refractive index mismatch of the display panel is improved, and the invention is especially applied to the TN, OCB, and VA liquid crystal display panels.
  • the pixel is no longer designed as the main pixel and the sub-pixel, which greatly improves the transmittance of the display panel and reduces the backlight cost. It does not increase the process difficulty of the display panel, does not affect the product yield, and improves the high-resolution display panel. The penetration rate and resolution are more significant.
  • Controlling the blue sub-pixel B to increase the brightness saturation with the voltage is close to the red sub-pixel R, the green sub-pixel G, or controlling the brightness of the red sub-pixel R, the green sub-pixel G, and the blue sub-pixel B of the front view to reduce the viewing angle A serious defect in color shift.
  • the gamma4 curve is the target curve of the blue sub-pixel voltage increase with the brightness change curve.
  • the blue sub-pixel space high and low brightness signal interval display must meet the positive RGB brightness ratio, the blue sub-pixel space level is not changed.
  • the gamma curve of the first set of high voltage signals and the low voltage signals of the blue sub-pixels in Figure 7 is the gamma1 curve
  • the gamma curve of the second group is the gamma2 curve. From the gamma1 and gamma2 curves, it can be seen that the two combined sides look at the brightness. The situation in which the voltage changes are saturated is different. As shown in FIG.
  • the difference between the actual brightness of the first group of gamma1 curves and the target brightness is d1(n), which is much larger than the actual brightness and target brightness of the gamma2 curve of the second group.
  • the difference value is d2(n).
  • the difference between the actual brightness of the first group of gamma1 curves and the target brightness is d1(n), which is much smaller than the difference value d2 of the gamma2 curve of the second group ( n).
  • the combination of the high voltage and low voltage of the blue sub-pixel space display is suitable for the gamma1 curve when the blue high-brightness signal is present on the image quality content, and vice versa, the blue sub-pixel space is displayed with the high-low luminance signal interval.
  • the high voltage and low voltage are combined into a gamma2 curve, it is suitable when the blue lower brightness signal is present on the image quality content.
  • the blue sub-pixels in a certain pixel group n are 10*10 blue sub-pixel ranges, and the blue sub-pixels are Bn_1, 1, Bn_1, 2, ... Bn_10, 10.
  • the different blue sub-pixel signals can theoretically give the cyclic switching of the high and low voltage timings in time to obtain the high and low voltage combination of the front view and the side view observation effect.
  • the signal as shown in Table 1 is obtained by cyclically switching the low voltage signal of Table 2 and the high voltage signal of Table 3 at a certain timing.
  • the first voltage signal is smaller than the original signal, and the second voltage signal is greater than or equal to the original signal, and the brightness of the equivalent or close to the original signal can be obtained by cyclically switching.
  • the original blue sub-pixel signals Bn_i,j as shown in Table 1 are combined with high and low voltage signals as shown in Table 2 and Table 3.
  • the sequential presentation can improve the apparent role bias.
  • the dice pixel replaces the image sub-pixel signal of the original position with a high and low luminance interval signal to improve the color shift.
  • Bn_3, 4 is represented by a first luminance signal, that is, a low luminance signal, and the low luminance signal can function to improve the apparent role bias.
  • the other blue sub-pixels in the unit that is, the first voltage signal (Bn_2, 4, Bn_3, 3, Bn_3, 5, Bn_4, 4) adjacent to Bn_3, 4, is the low voltage.
  • the signal is assigned to the first voltage signal of Bn_3,4 in the unit.
  • the low-intensity signal calculation of the specific position in the unit is to statistically adjust the true positional influence of all the sub-pixels in the unit to be compensated for the low-brightness signal and the corresponding position of the individual sub-pixels in the unit, so that the low-intensity sub-pixel signal is adjusted.
  • the compensation effect can be matched to the effect of the unit's average required compensation signal.
  • the five blue sub-pixels are used as a unit, and the low-luminance signals Ln'_3, 4 are given to the specific blue sub-pixels Bn_3, 4 positions, in order to improve the resolution of the image quality presentation, the low-brightness signal
  • Ln'_3, 4 must also include low voltage signals Ln_2, 4, Ln_3 considering adjacent blue sub-pixels Bn_2, 4, Bn_3, 3, Bn_3, 5, Bn_4, 4.
  • the four blue sub-pixel low voltage signals can be allocated to adjacent blue sub-pixels that can exhibit low-brightness signals, such as Bn_2, 4 low-voltage signals Ln_2, 4 It is possible to assign signals to the blue sub-pixels corresponding to Ln_1, 4, Ln_2, 3, Ln_2, 5 and Ln_3, 4.
  • the adjacent blue sub-pixels include four blue sub-pixels Bn_2, 4, Bn_3, 3, Bn_3, 5, Bn_4, 4 arranged in a cross shape, disposed around Bn_3, 4.
  • adjacent blue sub-pixels include eight blue sub-pixels Bn_2, 3, Bn_2, 4, Bn_2, 5, Bn_3, 3, Bn_3, 5, Bn_4, 3, Bn_4, 4, Bn_4, 5 are set in the shape of a meter, set around Bn_3, 4.
  • the first luminance signal is acquired according to different weights according to the first voltage signal of the first blue sub-pixel itself and the first voltage signal of the plurality of adjacent blue sub-pixels.
  • the weight value of the first voltage signal of the first blue sub-pixel itself is 0.5
  • the weight value of the first voltage signal of the plurality of adjacent blue sub-pixels is 0.125.
  • the sum of the weight values of the first voltage signals of the plurality of adjacent blue sub-pixels is less than or equal to 1.
  • Bn_3, 4 is a new low-brightness signal Ln'_3, 4 signal presented by the low-brightness signal, and all low-voltage signal blue sub-pixels Ln_i in the unit , j for the contribution of the low-brightness signal Ln'_3, 4 signal weight as shown in Table 6, the Ln'_3, 4 signal takes into account Ln_2, 4, Ln_3, 3, Ln_3, 5, Ln_4, 4 and Ln_3, 4 Five blue subpixels low battery The pressure signal, wherein Ln_3, 4 has a corresponding weight value of 0.5, and the remaining blue sub-pixels of Ln_2, 4, Ln_3, 3, Ln_3, 5, Ln_4, 4 have a corresponding weight value of 0.125.
  • the weight value of the first voltage signal of the first blue sub-pixel is equal to the sum of the weight values of the plurality of first voltage signals adjacent to its blue sub-pixel.
  • the edge points in Table 4 will get better weight values.
  • a number of blue sub-pixels in space are considered in consideration of individual blue sub-pixels.
  • the blue sub-pixels in the unit are displayed with high and low luminance signal intervals instead of the image blue sub-pixel signals of the original position.
  • every five blue sub-pixels in the space are one unit.
  • Bn_2,4 in this unit is represented by a high-brightness signal.
  • the other blue sub-pixels in the unit are the high-voltage signal distribution of the blue sub-pixels (Bn_1, 4, Bn_2, 3, Bn_2, 5, Bn_3, 4) adjacent to Bn_2, 4.
  • Bn_1, 4, Bn_2, 3, Bn_2, 5, Bn_3, 4 are the high-voltage signal distribution of the blue sub-pixels adjacent to Bn_2, 4.
  • the high-brightness signal of the specific position Bn_2,4 in the unit is calculated by statistically all the sub-pixels in the unit need to be given high-brightness signal compensation and the real position influence of the corresponding position of the individual sub-pixels in the unit is weighted, so that the high brightness
  • the compensation effect of the sub-pixel signal can conform to the effect of the average required compensation signal of the unit.
  • the high-brightness signal Hn'_2,4 is given to the specific blue sub-pixel position Bn_2,4 with 5 blue sub-pixels as one unit, and the high-brightness signal is improved for improving the image quality.
  • Hn'_2,4 must include high-voltage signals Hn_1,4,Hn_2 considering adjacent blue sub-pixels Bn_1,4,Bn_2,3,Bn_2,5,Bn_3,4 in addition to their own Hn_2,4 high-voltage signals.
  • the four blue sub-pixel high voltage signals can be allocated to adjacent blue sub-pixels capable of presenting high-brightness signals, such as Bn_3, 4 high-voltage signals Hn_3, 4 It is possible to assign signals to the blue sub-pixels corresponding to Hn_2, 4, Hn_3, 3, Hn_3, 5 and Hn_4, 4.
  • the adjacent blue sub-pixels include four blue sub-pixels Bn_1, 4, Bn_2, 3, Bn_2, 5, Bn_3, 4 which are arranged in a cross shape and are disposed around Bn_2, 4.
  • adjacent blue sub-pixels include eight blue sub-pixels Bn_1, 3, Bn_1, 4, Bn_1, 5, Bn_2, 3, Bn_2, 5, Bn_3, 3.
  • Bn_3, 4, Bn_3, 5 are set in the shape of a meter and are set around Bn_2, 4.
  • Hn'_2,4 signal is presented with 5 blue sub-pixels as a unit, and Bn_2, 4 positions are high-brightness signals, and all blue sub-pixels in the block n are displayed.
  • the contribution weight of the high voltage signal Hn_i,j for presenting a new high-brightness display signal Hn'_2,4 signal is as shown in Table 8, which considers Hn_1, 4, Hn_2, 3, Hn_2, 5, Hn_3, 4 and Hn_3, 4 Five blue sub-pixel high-brightness signals, in which Hn_2, 4 have corresponding weight values of 0.5, and the remaining four sub-pixels of Hn_1, 4, Hn_2, 3, Hn_2, 5, Hn_3, and 4 have a corresponding weight value of 0.125.
  • the weight value of the second voltage signal of the second blue sub-pixel is equal to the sum of the weight values of the plurality of second voltage signals of the adjacent blue sub-pixels.
  • the edge points in Table 4 will get better weight values.
  • each high and low voltage brightness position can be equivalent to the same result, which can achieve both the viewing angle compensation and the image resolution.
  • the present invention also provides a display device that can perform the above-described driving method.
  • the display device includes a display panel 210, a control unit 220, and a driving unit 230.
  • the display device may be a TN, OCB, VA type or curved display device, but is not limited thereto.
  • the display device can use a direct backlight, and the backlight can be white light, RGB three-color light source, RGBW four-color light source or RGBY four-color light source, but is not limited thereto.
  • the display device may also be, for example, an OLED display panel, a QLED display device, a curved display device, or other display device.
  • the pixel unit on the display panel 210 is divided into a plurality of pixel groups; the blue of each pixel group
  • the color sub-pixel is divided into a plurality of sets of blue pixel pairs, each set of blue pixel pairs includes adjacent first blue sub-pixels and second blue sub-pixels, and one set of adjacent blue pixels of the pair of blue pixels
  • the first blue sub-pixel of the pair and the second blue sub-pixel of the other set of blue pixel pairs are disposed adjacent to each other;
  • the control unit 220 includes an obtaining unit for acquiring original driving data of each pixel group, a calculating unit for obtaining a display hue of each pixel group according to the original driving data, and acquiring gray according to the hue range to which the displayed hue belongs.
  • a step value lookup table the original drive data of each blue subpixel in the gray scale value lookup table corresponds to a set of target gray scale value pairs, each set of target gray scale value pairs includes unequal first voltage signals and second voltages a signal
  • the calculating unit causes the first voltage signal and the second voltage signal to alternately drive the positive viewing angle of the blue sub-pixel to be mixed with the brightness of the original driving data to drive the positive viewing angle of the blue sub-pixel; wherein the calculating unit is further configured to The first voltage signal of a blue sub-pixel and the plurality of first voltage signals of the adjacent blue sub-pixels acquire the first luminance signal according to different weights, according to the second voltage signal of the second blue sub-pixel and the plurality of The second voltage signals of the adjacent blue sub-pixel
  • the driving part 230 is respectively connected to the control part 220 and the liquid crystal display panel 210; the driving part 230 is for driving the first blue sub-pixel according to the first brightness signal; and driving the second blue sub-pixel according to the second brightness signal.
  • the calculating unit is further configured to calculate an average grayscale value of each color sub-pixel in each pixel group according to the original driving data; and obtain an average grayscale value according to each color sub-pixel in each pixel group. The hue of each pixel group is displayed.
  • the calculating unit is further configured to determine a color purity of each pixel group according to the picture input signal; the acquiring unit is further configured to obtain a corresponding gray level according to a range to which the display hue and the color purity of each pixel group belong. Value lookup table.
  • the weight value of the first voltage signal of the first blue sub-pixel is equal to the sum of the weight values of the plurality of first voltage signals adjacent to the blue sub-pixel; the second blue sub-pixel The weight value of the two voltage signals is equal to the sum of the weight values of the plurality of second voltage signals of the adjacent blue sub-pixels.
  • the blue sub-pixels adjacent to the first blue sub-pixel include four blue sub-pixels.
  • the pixels are arranged in a cross shape, and the blue sub-pixels adjacent to the second blue sub-pixel include four blue sub-pixels and are arranged in a cross shape.
  • the blue sub-pixels adjacent to the first blue sub-pixel include eight blue sub-pixel dots and are arranged in a m-shape, and the blue sub-pixels adjacent to the second blue sub-pixel include eight The blue sub-pixels are arranged in a square shape.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

La présente invention concerne un procédé d'attaque de pixel de panneau d'affichage et un dispositif d'affichage. Le procédé consiste : à diviser des unités de pixels sur un panneau d'affichage en une pluralité de groupes de pixels (S110) ; à obtenir les données d'attaque d'origine de chaque groupe de pixels afin d'obtenir une teinte d'affichage (S120) ; à obtenir une table de consultation de valeurs de niveaux de gris selon une plage de teintes à laquelle la teinte d'affichage appartient (S130) ; les données d'attaque d'origine de chaque sous-pixel bleu dans la table de consultation de valeurs de niveaux de gris correspondent à un premier signal de tension et à un second signal de tension qui ne sont pas égaux (S140) ; à diviser des sous-pixels bleus de chaque groupe de pixels en une pluralité de paires de pixels bleus qui comprennent des premier et second sous-pixels bleus adjacents (S150) ; à obtenir des premiers signaux de luminosité ayant des poids différents selon le premier signal de tension du premier sous-pixel bleu et des premiers signaux de tension d'une pluralité des sous-pixels bleus adjacents, et à attaquer le premier sous-pixel bleu ; à obtenir des seconds signaux de luminosité ayant des poids différents selon le second signal de tension du second sous-pixel bleu et des seconds signaux de tension d'une pluralité de sous-pixels bleus adjacents, et à attaquer le second sous-pixel bleu (S160).
PCT/CN2017/091641 2017-05-10 2017-07-04 Procédé d'attaque de pixel de panneau d'affichage et dispositif d'affichage Ceased WO2018205395A1 (fr)

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CN107505743A (zh) * 2017-08-25 2017-12-22 惠科股份有限公司 液晶显示装置驱动方法
CN107492356A (zh) 2017-08-25 2017-12-19 惠科股份有限公司 液晶显示装置及其驱动方法
CN107591140B (zh) * 2017-09-25 2020-05-22 惠科股份有限公司 一种驱动装置及显示装置
CN107818768B (zh) * 2017-10-10 2019-09-17 惠科股份有限公司 显示装置的驱动方法与驱动装置
CN108053797B (zh) * 2017-12-20 2019-12-13 惠科股份有限公司 一种显示装置的驱动方法及驱动装置
CN108062937B (zh) * 2017-12-20 2020-02-21 惠科股份有限公司 一种显示装置的驱动方法及显示装置
CN107863083B (zh) * 2017-12-20 2019-12-13 惠科股份有限公司 一种显示装置的驱动方法及驱动装置
CN107863084B (zh) * 2017-12-20 2019-12-13 惠科股份有限公司 一种显示装置的驱动方法及驱动装置
CN108010492B (zh) * 2017-12-20 2019-09-13 惠科股份有限公司 一种显示面板的背光调节方法、背光调节装置及显示装置
CN109285520B (zh) * 2018-11-20 2020-09-29 惠科股份有限公司 像素驱动方法和像素驱动装置
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